Rope drill-jar



(No Model.) v 0; PHILLIPS.

ROPE DRILL JAR.

kxixmxkx Patented I111 WITNESSES IJVVEJVTOR Unrrn STATES CHARLESPHILLIPS, OF RIGHBURG, NEW YORK.

ROPE DRILL-JAR.

SPECIFICATION forming part of Letters Patent No. 321,753, dated July 7,1885.

Application filed May 11, 1885. (No model.)

To all whom it may concern:

Be it known that I, CHARLES PHrLLIrs, a citizen of the United States,and a resident of Richburg, in the county of Allegany and State of NewYork, have invented certain new and useful Improvements in Rope Drill-Jars and I do hereby declare that the following is afull, clear, andexact description of the invention, which will enable others skilled inthe art to which it appertaius to make and use the same, reference beinghad to the accompanying drawings, which form a part of thisspecification.

My invention relates to rope drill-jars; and it consists in certain newand useful improvements on the invention for which Letters Patent No.311,157 were granted, bearing date of January 20, 1885, the saidimprovements consisting, first, in a removable grooved steel block,which is placed in operative position in the vertical slot of the drillstem or handle at the lower end of the knockinghead, and around whichthe ropebight passes, and, secondly, in the use of suitable keys, whichpass through the jar box or weight and serve to prevent the ends of therope-bight from slipping or pulling out of the said jar-box.

Referring to the annexed drawings, Figure 1 is a perspective View of myimproved rope drilljar. Fig. 2 is a longitudinal vertical sectional viewof the same, taken on line mm, Fig. 1; and Fig. 3 is a perspectivedetail View of the removable grooved steel block.

a The same letters of reference indicate corre sponding parts in all thefigures.

Referring to the several parts by letter, A represents the upper end ofthe drillstem, and B the metallic handle, which is welded t-hereto,andis provided with the vertical slot 0 and the grooves 0, extending fromthe said slot to the upper end of the handle, these grooves being-of asufficient depth and size to adapt them to receive the rope-bight E,which is large and strong enough to form a connection between thedrill-stem and the box or weight.

K indicates a steel block,which is grooved on each side and at one endat 70, to adapt it to receive the rope-bight E, the rear end of thissteel block being provided with the recess or groove 7a, to adapt it tofit upon or rest against the lower rounded end of the knocking-head B.The ends of the rope-bight pass up through the inclined apertures I ofthe box or weight J, and are knotted at their extremities to preventtheir escape from the saidapertures, the pins or keys L being driventhrough transverse holes 1 in the box or Weight between the ends of therope-bight, as shown in the-drawings, thereby compressing the rope andpreventing the extremities of the same from pulling through the jar,which is liable to happen where the said keys are not employed, thisarrangement saving much loss of time and annoyance.

It will be seen that as the steel block, around which the rope-bight,passes and to which the strain is applied in lifting the drill at theend of each down stroke,becomes worn through use it may be readilyremoved without the use of skilled labor and replaced by a newblock,while the keys L effectually prevent the ends of the rope-bightfrom slipping out of the perforations I of the jar J, thereby effectinga great saving in time.

From the foregoing description, taken in connection with theaccompanying drawings, the nature of my improvements will be readilyunderstood without requiring further explanation.

It will be seen that my improvements are exceedingly simple inconstruction,and are at the same time very effective in their operation.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

1. In jars for drilling machinery, the combination,with the drill-stemhaving the vertical slot and the grooves extending from the same to thetop of the handle, of the jar-box having the inclined perforations, theropebight, and the keys passing through transverse perforations in thejar-box between the ends of the rope-bight, for the purpose set forth.

2. In jars for drilling machinery, the combination of the jar-box havingthe inclined apertures, the rope-bight, the drill-stem having thevertical slot and the grooves extending from the same to the top of thehandle,

and the removable grooved steel block, ar- In testimony that I claim theforegoing, as

ranged as described, for the purpose set forth. my own Ihave hereuntoaflixed my signaturein 3. In jars for drilling machinery, thecompresence of two witnesses.

binatiomwith the drill-stem having the verti- 5 cal slot and the groovesextending from the CHARLES PHILLIPS.

same to the top of the handle, and the removable grooved steel block, ofthe rope-bight, and the jar-box having the inclined apertures andprovided with the transverse keys ar- IO ranged to operate for thepurpose set forth.

\Vitnesses J 01m R. WroK, Cn'ARLEs F. Fox".

